Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Ages for Fourmarierite at Bjertnes Pegmatite, Krøderen Lake, Krødsherad, Buskerud, Norway

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 980Ma - 880Ma at this locality

Mineralization age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Giersdorf_00000805	980	900	Uraninite	Uraninite	U	9863	Bjertnes Pegmatite, Krøderen Lake, Krødsherad, Buskerud, Norway	Bjørlykke & Burger (1962)	NGT42_187
Giersdorf_00000806	970	890	Uraninite	Uraninite	U	9863	Bjertnes Pegmatite, Krøderen Lake, Krødsherad, Buskerud, Norway	Bjørlykke & Burger (1962)	NGT42_187
Giersdorf_00000807	960	880	Uraninite	Uraninite	U	9863	Bjertnes Pegmatite, Krøderen Lake, Krødsherad, Buskerud, Norway	Bjørlykke & Burger (1962)	NGT42_187

Mineralization age (deprioritized)

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Giersdorf_00000808	1270	1070	Uraninite	Uraninite	U	9863	Bjertnes Pegmatite, Krøderen Lake, Krødsherad, Buskerud, Norway	Bjørlykke & Burger (1962)	NGT42_187